33 lines
629 B
C
33 lines
629 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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int main()
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{
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pid_t fpid; // fpid表示fork函数返回的值
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fpid = fork();
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// create child process
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if (fpid == -1)
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{
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perror("perror in fork!");
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exit(EXIT_FAILURE);
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}
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if (fpid == 0)
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{
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printf("I am the child process, my process id is %d\n", getpid());
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sleep(1);
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printf("child process DONE\n");
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exit(EXIT_SUCCESS);
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}
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else
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{
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printf("I am the parent process, my process id is %d\n", getpid());
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wait(NULL);
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printf("parent process DONE\n");
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exit(EXIT_SUCCESS);
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}
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exit(EXIT_SUCCESS);
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}
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